Gas lamp



FIG. 1 is perspective view of a gas lamp showing my new design;

FIG. 2 is a front side elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a rear side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The ornamental design for a gas lamp, as shown and described.